摘要
总结了管线用X60，X65钢级无缝管的研制情况，阐述了其化学成分的选择和在线正火及控制冷却工艺，讨论了该类钢的强韧化机理。工业性试生产表明，选用0．16％C，1．45％Mn，0.05％Nb，0.10％V钢，采用在线正火工艺，可以生产出X60钢级无缝管。在该化学成分的基础上再加入少量的Cr，适当地提高钢中的Si含量，并控制N含量，辅以在线正火及控制冷却工艺，即可生产X65级无缝管。实验证明，所选的化学成分和采取的工艺路线是正确的。
The paper summarizes the development of the X6o and X65 seamless steel pipes forpipeline purpose,describes the determination of the steel chemical composition and the processes ofon-line normalization and controlled-cooling for the pipe and discusess toughening mechanism ofthe steels. Relevant pilot commercial production has proven that with steel containing O. 16%C,l. 45%Mn, 0. 05%Nb and 0. 0l NV and the on-line normalization treatment, the X60 seamlesssteel tube can be obtained. Based on the said chemical complsition,the X65 pipe can also be madeby means of addition of Cr in a small ammount,properly increasing Si content,prlperly controllingof N content and adopting on-line normalization treatment and controlled-cooling processes. Rele-vant operation practice has proven that the chemical composition selected and the processes em-ployed are adequate-
出处
《钢管》
CAS
1997年第6期42-46,共5页
Steel Pipe
关键词
管线
无缝钢管
在线正火
控制冷却
强韧化
Seamless steel pipe for pipeline purpose Chemical composition On-line nor-malization Controlled-cooling Toughening
